Adds new microbenchmarks for destructuring, rest params and
default params.
PR-URL: https://github.com/nodejs/node/pull/6222
Reviewed-By: Brian White <mscdex@mscdex.net>
It's useful to be able to force optimization of a function.
Rather than duplicating the code everywhere for it, let's
make a utility available.
PR-URL: https://github.com/nodejs/node/pull/6222
Reviewed-By: Brian White <mscdex@mscdex.net>
Overall cleanup in code, eliminate reliance on `arguments`.
Benchmarks show that as of v8 5.0.71.32, using rest params + apply
has good performance. The spread operator is not yet well optimized
in v8
```
misc/console.js method=restAndSpread concat=1 n=1000000: 374779.38359
misc/console.js method=restAndSpread concat=0 n=1000000: 375988.30434
misc/console.js method=argumentsAndApply concat=1 n=1000000: 682618.61125
misc/console.js method=argumentsAndApply concat=0 n=1000000: 645093.74443
misc/console.js method=restAndApply concat=1 n=1000000: 682931.41217
misc/console.js method=restAndApply concat=0 n=1000000: 664473.09700
```
PR-URL: https://github.com/nodejs/node/pull/6233
Reviewed-By: Brian White <mscdex@mscdex.net>
Aligns the functionality of SlowBuffer with the new Buffer
constructor API. Next step is to docs-only deprecate
SlowBuffer.
Replace the internal uses of SlowBuffer with
`Buffer.allocUnsafeSlow(size)`
PR-URL: https://github.com/nodejs/node/pull/5833
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Adds additional `targetStart`, `targetEnd`, `sourceStart,
and `sourceEnd` arguments to `Buffer.prototype.compare`
to allow comparison of sub-ranges of two Buffers without
requiring Buffer.prototype.slice()
Fixes: https://github.com/nodejs/node/issues/521
PR-URL: https://github.com/nodejs/node/pull/5880
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
When create Buffer from empty string will touch
C++ binding also.
This patch can improve edge case ~70% faster.
PR-URL: https://github.com/nodejs/node/pull/4414
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
4d78121b77 had lint errors that went
undetected. This fixes them.
PR-URL: https://github.com/nodejs/node/pull/5840
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
use String.prototype.repeat() to simplify code, less code,
more semantically.
PR-URL: https://github.com/nodejs/node/pull/5359
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
This commit improves setImmediate() performance by moving the
try-finally block that wraps callback execution into a separate
function because currently v8 never tries to optimize functions
that contain try-finally blocks.
With this change, there is a ~20-40% improvement in the included
setImmediate() depth benchmarks. The breadth benchmarks show a slight
improvement.
PR-URL: https://github.com/nodejs/node/pull/4169
Reviewed-By: Minwoo Jung <jmwsoft@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Several changes:
* Soft-Deprecate Buffer() constructors
* Add `Buffer.from()`, `Buffer.alloc()`, and `Buffer.allocUnsafe()`
* Add `--zero-fill-buffers` command line option
* Add byteOffset and length to `new Buffer(arrayBuffer)` constructor
* buffer.fill('') previously had no effect, now zero-fills
* Update the docs
PR-URL: https://github.com/nodejs/node/pull/4682
Reviewed-By: Сковорода Никита Андреевич <chalkerx@gmail.com>
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Enabled no-self-assign rule in ESLint.
This required one change in a benchmark file. Changed a loop (that is
outside of the benchmark itself, so performance is not critical) from a
for loop that repeats a string to use String.prototype.repeat() instead.
While at it, took the opportunity to const-ify the benchmark file.
Also moved the "Strict" section in the .eslintrc to match where it is in
the ESLint documentation. Updated the link for Strict rules to point to
the ESLint website rather than the GitHub-hosted code.
PR-URL: https://github.com/nodejs/node/pull/5552
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
PR-URL: https://github.com/nodejs/node/pull/5517
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Array#pop() is known to be faster than Array#shift().
To be exact, it's O(1) vs. O(n). In this case there's no difference
from which side of the "pool" array the object is retrieved,
so .pop() should be preferred.
PR-URL: https://github.com/nodejs/node/pull/2174
Reviewed-By: mscdex - Brian White <mscdex@mscdex.net>
Reviewed-By: jasnell - James M Snell <jasnell@gmail.com>
Reviewed-By: ofrobots - Ali Ijaz Sheikh <ofrobots@google.com>
In order to comply with linting rules used in the rest of the code base,
eliminate redeclared variables. A conservative approach is used so as to
avoid unintentional performance issues (for example, as might be seen in
some situations when using `let` instead of `var`).
PR-URL: https://github.com/nodejs/node/pull/5468
Reviewed-By: Brian White <mscdex@mscdex.net>
There is a benchmark for the class method `Buffer.compare()` but not for
the instance method `buf.compare()`. This adds that benchmark.
I used this to confirm a performance regression in an implementation I
was considering. While the implementation was a bust, it does seem like
the benchmark is worthwhile.
The benchmark is nearly identical to the existing `Buffer.compare()`
benchmark except, of course, that it calls `buf.compare()` instead.
PR-URL: https://github.com/nodejs/node/pull/5441
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: Evan Lucas <evanlucas@me.com>
In the hopes of soon having the benchmark code linted, this change
groups all the likely non-controversial lint-compliance changes such as
indentation, semi-colon usage, and single-vs.-double quotation marks.
Other lint rules may have subtle performance implications in the V8
currently shipped with Node.js. Those changes will require more careful
review and will be in a separate change.
PR-URL: https://github.com/nodejs/node/pull/5429
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Brian White <mscdex@mscdex.net>
The benchmark runner spawns new processes for each configuration. The
specific configuration is transfered by process.argv. This means that
the values have to be parsed. As of right now only numbers and strings
are parsed correctly. However other values such as objects where used.
This fixes the benchmarks that used non-string/number values and
prevents future issues by asserting the type.
PR-URL: https://github.com/nodejs/node/pull/5177
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
url.js was broken since it didn't use the common.js runner. This fixes
that issue by merging it with url-resolve.js, which also benchmarks
url.resolve.
PR-URL: https://github.com/nodejs/node/pull/5177
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Rod Vagg <rod@vagg.org>
Apply strict mode to benchmark code.
PR-URL: https://github.com/nodejs/node/pull/5336
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
This commit improves escape() performance by up to 15% with the
existing querystring-stringify benchmarks by reducing the number
of string concatentations. A potential deopt is also avoided by
making sure the index passed to charCodeAt() is within bounds.
PR-URL: https://github.com/nodejs/node/pull/5012
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
This commit improves parse() performance by ~20-200% with the various
querystring-parse benchmarks.
Some optimization strategies used in this commit include:
* Combining multiple searches (for '&', '=', and '+') on the same
string into a single loop
* Avoiding string.split()
* Minimizing creation of temporary strings
* Avoiding string decoding if no encoded bytes were found and the
default string decoder is being used
PR-URL: https://github.com/nodejs/node/pull/5012
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
This commit splits each path benchmark into separate posix and
Windows benchmark files. This allows benchmarking (platform-)specific
inputs against specific platforms (only).
PR-URL: https://github.com/nodejs/node/pull/5123
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: James M Snell <jasnell@gmail.com>
Added ability to dgram.send to send multiple buffers, _writev style.
The offset and length parameters in dgram.send are now optional.
Refactored the dgram benchmarks, and seperated them from net.
Added docs for the new signature.
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Saúl Ibarra Corretgé <saghul@gmail.com>
Fixes: https://github.com/nodejs/node/issues/4302
PR-URL: https://github.com/nodejs/node/pull/4374
Constant declaration for `net` is omitted in `idle_server.js`
Add a constant declaration for constant `net`
PR-URL: https://github.com/nodejs/node/pull/3950
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
These changes improve parse() performance from ~11-30% on all of
the existing querystring benchmarks.
PR-URL: https://github.com/nodejs/node/pull/4675
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
The `util.format()` is used frequently, make the method faster
is better.
R-URL: https://github.com/nodejs/node/pull/3964
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Reviewed-By: James M Snell <jasnell@gmail.com>
When create Buffer from a Buffer will copy data
from old to new even though length is zero.
This patch can improve edge case 4x faster.
following is benchmark results.
new: buffers/buffer_zero.js n=1024: 2463.53891
old: buffers/buffer_zero.js n=1024: 618.70801
PR-URL: https://github.com/nodejs/node/pull/4326
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
assert.deepEqual: when actual and expected are typed arrays,
wrap them in a new Buffer each to increase performance
significantly.
PR-URL: https://github.com/nodejs/node/pull/4330
Fixes: https://github.com/nodejs/node/issues/4294
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
process.hrtime() was performing too many operations in C++ that could be
done faster in JS. Move those operations over by creating a length 4
Uint32Array and perform bitwise operations on the seconds so that it was
unnecessary for the native API to do any object creation or set any
fields.
This has improved performance from ~350 ns/op to ~65 ns/op. Light
benchmark included to demonstrate the performance change.
PR-URL: https://github.com/nodejs/node/pull/3780
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Improve performance by pushing directory entries to returned array in
batches of 8 using pushValueToArray() in JS. Add benchmarks to
demonstrate this improvement.
PR-URL: https://github.com/nodejs/node/pull/3780
Reviewed-By: Fedor Indutny <fedor@indutny.com>
For performance add headers to the headers Array by pushing them on from
JS. Benchmark added to demonstrate this case.
PR-URL: https://github.com/nodejs/node/pull/3780
Reviewed-By: Fedor Indutny <fedor@indutny.com>
The CoC requests to avoid the casual use of profanity.
PR-URL: https://github.com/nodejs/node/pull/4122
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: targos - Michaël Zasso <mic.besace@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
Adds the string search implementation from v8
which uses naive search if pattern length < 8
or to a specific badness then uses Boyer-Moore-Horspool
Added benchmark shows the expected improvements
Added option to use ucs2 encoding with Buffer::IndexOf
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/2539
Very minor update in benchmark/common.js
Not exactly a critical change, just continued cleaning
out of old joyent/node PRs that never landed.
Ref: https://github.com/nodejs/node-v0.x-archive/pull/8515
PR-URL: https://github.com/nodejs/node/pull/2399
Reviewed-By: Sakthipriyan Vairamani <thechargingvolcano@gmail.com>
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
Reviewed-By: Michaël Zasso <mic.besace@gmail.com>
This commit replaces instances of io.js with Node.js, based on the
recent convergence. There are some remaining instances of io.js,
related to build and the installer.
Fixes: https://github.com/nodejs/node/issues/2361
PR-URL: https://github.com/nodejs/node/pull/2367
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: João Reis <reis@janeasystems.com>
As per the discussion in #734, this patch deprecates the usage of
`EventEmitter.listenerCount` static function in the docs, and introduces
the `listenerCount` function in the prototype of `EventEmitter` itself.
PR-URL: https://github.com/nodejs/node/pull/2349
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
As a follow-up to 0d15161, this commit adds benchmarks for the rest
of the path functions and also forces V8 to optimize the functions
before starting the benchmark test.
PR-URL: https://github.com/nodejs/io.js/pull/2103
Reviewed-By: Brendan Ashworth <brendan.ashworth@me.com>
Make the inner loop execute fewer compare-and-branch executions per
processed byte, resulting in a 50% or more speedup.
This coincidentally fixes an out-of-bounds read:
while (unbase64(*src) < 0 && src < srcEnd)
Should have read:
while (src < srcEnd && unbase64(*src) < 0)
But this commit removes the offending code altogether.
Fixes: https://github.com/nodejs/io.js/issues/2166
PR-URL: https://github.com/nodejs/io.js/pull/2193
Reviewed-By: Trevor Norris <trev.norris@gmail.com>
Myles Borins
James M Snell
Brian White
Jackson Tian
Rich Trott
Jackson Tian
Evan Lucas
Anton Khlynovskiy
Andreas Madsen
Matteo Collina
Minwoo Jung
Claudio Rodriguez
Trevor Norris
Karl Skomski
Dmitry Vasilyev
Michaël Zasso
cjihrig
Sakthipriyan Vairamani
Nathan Woltman
Ben Noordhuis